blessing



(No Model.)

J. H. BLESSING.

TURNING PLUGS.

Patented Sept. 15, 1885.

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UNITED STATES PATENT OEEIcE,

JAMES H. BLESSING, OF ALBANY, NEW YORK.

TURNING PLUG.

SPECIFICATION forming part of Letters Patent No. 326,195, dated September 15, 1885.

Application filed September 29, 1884. (No model.)

To all whom it may concern:

Be it known that I, JAMES H. BLESSING, of the city and county of Albany, in the State of New York, have invented certain new and useful Improvements in Stop-Cocks, of which the following is a specification.

My invention consists in providing the shell or casing of the cock with a movable and renewable sleeve constructed and adapted to' operate as herein specified; and the objects of my improvements are, first, to provide a renewable sleeve for the device, whereby the necessity for removing the cock from a line of pipe when said cock becomes worn or leaky is avoided and, second, to afford facilities for grinding in theturn plug while fluid-pressure is maintained in the line of pipe.

These objects I attain by means of the mechanism illustrated in the accompanying drawings, which, being herein referred to, form part of this specification, and in which Figure 1 is a longitudinal section of the casing and renewable sleeve of a stop-cock containing my improvements, the turn-plug being shown in elevation; Fig. 2, a plan view of the casing and renewable sleeve,with the openings of the latter in position for the flow of fluids through the cock; and Fig. 8, a like view with the openings of the sleeve arranged crosswise of the casing to prevent the flow of fluids. 7

As represented in the drawings, A is the casing or shell of the cock, made in the usual and well-known form, and provided with lateral branches a. The conit'orm body of said casing is made sufficieutly large in diameter, and is bored out to receive the renewable sleeve B,which is fitted to form a tight joint in the bore of said body. Said sleeve is provided with oppositely-located openings 1), which conform to the openings of the branches a of the casing. The sleeve B is made of a hollow coni form shape. Its upper end is open, and is provided with notches b, for receiving a spanner or wrench for the purpose of turning said sleeve when occasion requires. The lower end of said sleeve is partially closed, and has a peripheral screw-thread, on which the nut b engages. Said nut bears against the lower end of the coniform body of the easing A in such manner that the sleeve B can thereby be drawn down to fit snugly into the body of the casing A. The turn-plug O is made in the usual coniform shape,to fit snugly into the bore of the sleeve B, with which it forms a tight joint, and has a transverse opening, 0, cut through it. The upper end of said turn-plug is provided with a head, 0, for receiving a wrench or handle by which it is turned, and its lower end is providedwith a screw stud, c, which passes through the central opening, b in the bottom of the sleeve B. Said stud is provided with a nut-,o which bears against the bottom of the sleeve B, so as to retain the turn-plug G in place. The sleeve B is held normally in a fixed positi0n,so that its openings 12 will coincide with the openings through the branches a, and while in that position the device operates in the well-known manner of the ordinary stop-cock.

When the cock becomes leaky by use and requires the turn-plug O to be ground in while pressure is maintained in the pipes,the nut b must be slackened, so as to release the sleeve B, which may then be turned a partial revolution by means of a spanner inserted in the notches b. After the sleeve B is secured in the position shown in Fig. 3, the plug 0 can be removed and the grinding proceeded with in the usual manner.

The several parts herein described being made interchangeablawhen the sleeve B and plug 0 become too leakyto be repaired in the manner above described, a new sleeve and plug can be inserted in the casing A without removing the latter from its place in a line of pipe.

. I claim as my invention- In a stopcock, the combination, with the casing A, of the removable sleeve B, provided with openings b, which coincide with the openings of the branches a,and the turn'plug O, the said sleeve being fitted into the bore of the casing A and adapted to be rotated therein, so as to entirely close up the openings through the lateral branches at, as and for the purpose herein specified.

JAMES H. BLESSING.

\Vitnesses:

JOHN W. WHEELooK, WM. H. Low. 

